Continuous Holocene Records of Paleo-El Nino Events from Laminated Lacustrine Sediment Cores from Southern Ecuador

厄瓜多尔南部层状湖泊沉积物岩心的古厄尔尼诺事件的连续全新世记录

• 批准号: 9813969
• 负责人: Geoffrey Seltzer
• 金额: $ 6.37万
• 依托单位: Syracuse University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-01 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9813969&HistoricalAwards=false
• 关键词: Continuous; Holocene; Records; Paleo; El

AbstractATM-9813969Seltzer, Geoffrey O.Syracuse UniversityTitle: Continuous Holocene Records of Paleo-El Nino Events from Laminated Lacustrine Sediment Cores from Southern EcuadorThis award supports a study designed to recover and analyze sediment cores spanning the last 12,000 years from lakes in southwestern Ecuador. The study has the potential to provide the first continuous, high-resolution record of large magnitude paleo-El Nino events from a region that historically has been one of the most sensitive land areas to the ENSO. These records will shed light on variations in the frequency of El Nino events through the Holocene and on the issue of the age of onset of the ENSO in the Nino 1 region. The ENSO time series derived from lakes in southern Ecuador will enable a comparison of the frequency of El Nino events in the Nino 1 zone with oceanic conditions that prevailed at various times across the tropical Pacific. Such a comparison would further the evaluation of several models that have been developed to determine the atmospheric and oceanographic factors that control the frequency and severity of El Nino events, including the future frequency and severity of ENSO in an enhanced greenhouse world.

摘要ATM-9813969塞尔策，杰弗里·O·锡拉丘兹大学题目：厄瓜多尔南部层状湖泊沉积岩芯中全新世古厄尔尼诺事件的连续记录该奖项支持一项旨在恢复和分析厄瓜多尔西南部湖泊过去12,000年沉积岩心的研究。这项研究有可能提供第一个连续的、高分辨率的大规模古厄尔尼诺事件记录，该地区历史上一直是对ENSO最敏感的陆地地区之一。这些记录将阐明厄尔尼诺事件在整个全新世期间的频率变化，以及尼诺1区域的ENSO爆发年龄问题。来自厄瓜多尔南部湖泊的ENSO时间序列将使人们能够将尼诺1区的厄尔尼诺事件频率与热带太平洋不同时期盛行的海洋条件进行比较。这种比较将进一步评估为确定控制厄尔尼诺事件的频率和严重程度的大气和海洋因素而开发的几个模型，包括在温室效应增强的世界中未来的ENSO的频率和严重程度。